SOLUTION: 4x=y^2 how do i determine if this equation defines y as a function of x? thank you

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Question 910385: 4x=y^2 how do i determine if this equation defines y as a function of x?
thank you

Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

does not define as a function of , because some value(s) of have more than one .
In general,
=> or
=> or
So, all the values of larger than would have two values.
For example, would be paired with
A function cannot assign more than one to any value.

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